英语问题定语从句关系代词有时候看到用from which ,有时候看到from where.这两者的区别是什么

from which 属于一般定语从句.相当于关系副词.而from where是定语从句很特殊的一种情况.比较少见.如：he hid himself behind the wall,(from where) he could see enemy clearly这道题意思是从墙后面.如果选from whi...